document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=146242>Question 146242</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together to mix the 20 drinks? \r<BR>\n" );
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document.write( "A. 2 minutes and 44 seconds <BR>\n" );
document.write( "B. 2 minutes and 58 seconds <BR>\n" );
document.write( "C. 3 minutes and 10 seconds <BR>\n" );
document.write( "D. 3 minutes and 26 seconds <BR>\n" );
document.write( "E. 4 minutes and 15 seconds \r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #106779 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=106779\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let's find the rate (per minute) of each person can do the job (mix 20 drinks).<BR>\n" );
document.write( "If Steven can do the job (mix 20 drinks) in 5 minutes, then he can do 1/5 of the job in 1 minute.<BR>\n" );
document.write( "If Susan can do the job (mix 20 drinks) in 10 minutes, then she can do 1/10 of the job in 1 minute.<BR>\n" );
document.write( "If Jack can do the job (mix 20 drinks) in 15 minutes, then he can do 1/15 of the job in 1 minute.<BR>\n" );
document.write( "Together, the three of them can do (1/5 + 1/10 + 1/15) of the job in 1 minute.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F5+%2B+1%2F10+%2B+1%2F15+=+11%2F30 ALIGN=MIDDLE  ALT=\"1%2F5+%2B+1%2F10+%2B+1%2F15+=+11%2F30\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So if the three of them can do 11/30 of the job in 1 minute, then it takes them 30/11 minutes to do the whole job (mix 20 drinks).<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30%2F11+=+2.7272 ALIGN=MIDDLE  ALT=\"30%2F11+=+2.7272\"   DISABLED_style= \"max-width:90%; height:auto;\" >minutes or 2 mins 44 secs. </SPAN>\n" );
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